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Marquise|Lab Grown|IGI

3.78ct G VS1 Marquise Lab Grown Diamond

EX • G/VS1 • IGI LG813604687

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG813604687

Diamond specifications and retailer prices

From $896 NZD
$504 USD
As of November 3, 2026
Save $5,398 NZD (86%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $6,294 NZD at Brilliant Earth · As of November 1, 2026
View at Brilliant Earth

About this 3.78ct lab-grown marquise diamond

This 3.78ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG813604687 or 813604687. Listed at 4 retailers as of November 1, 2026, with prices from $896 to $6,294, a $5,398 spread on the same certified stone. Brilliant Earth lists it at $6,294. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

3.78
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813604687
Dimensions16.72 × 8.11 × 4.98 mm
L/W Ratio2.06
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.72 mm8.11 mm3.78 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813604687
Side View
Table 61.0%Crown 35°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 3
Current: $6,294 NZD|Low: $885 NZD|High: $6,490 NZD|Avg: $4,032 NZD|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
November 3, 2026
Retailer 3$896 NZD
Retailer 2$1,684 NZD
Retailer 4$5,636 NZD
Brilliant Earth$6,294 NZD

38 data points across 4 retailers

4 retailers$896 NZD to $6,294 NZD

A
Cheapest Retailer
-
$896 NZD
$504 USD
Final sale: no returns
A
Retailer 2
-
$1,684 NZD
£746 GBP
View
Retailer 3
-
$5,636 NZD
$3,170 USD
View
Price last confirmed 16 days ago
Most Expensive
B
Brilliant Earth
21263694A · Nov 1
$6,294 NZD
$3,540 USD
View
3 more retailers have this diamond
Prices start from $896 NZDSave up to $5,398 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
3.78ct Marquise
$896 NZD